From mboxrd@z Thu Jan 1 00:00:00 1970 From: Massimo Cetra Subject: Re: fake rtable dst patch applied but kernel keeps panicing Date: Thu, 19 Apr 2012 10:37:46 +0200 Message-ID: <4F8FCEDA.20504@navynet.it> References: <4F8E9291.9000607@navynet.it> <4F8FCB53.7070603@huawei.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Cc: Massimo Cetra , netdev@vger.kernel.org, Eric Dumazet To: "Peter Huang(Peng)" Return-path: Received: from host188-6-static.238-77-b.business.telecomitalia.it ([77.238.6.188]:51527 "EHLO max.ctrix.it" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753227Ab2DSIiY (ORCPT ); Thu, 19 Apr 2012 04:38:24 -0400 In-Reply-To: <4F8FCB53.7070603@huawei.com> Sender: netdev-owner@vger.kernel.org List-ID: On 19/04/2012 10:22, Peter Huang(Peng) wrote: > Hi, Massimo > > can this be reproduce easily or depend on some HW or SW environment? > > This patch already verified on 2.6.32.36/54,3.3.1, 3.4.rc[23] for over > 6 hours, but didn't encounter this problem. The server is a Dell PowerEdge R410. The network cards are: 01:00.0 Ethernet controller: Broadcom Corporation NetXtreme II BCM5716 Gigabit Ethernet (rev 20) 01:00.1 Ethernet controller: Broadcom Corporation NetXtreme II BCM5716 Gigabit Ethernet (rev 20) The server is doing nothing except for routing packets and running virtual servers. This server is guesting about 10 KVM virtual servers in a bridged configuration. lamu:~# brctl show br0 bridge name bridge id STP enabled interfaces br0 8000.0024e869f8eb yes eth1 kvmnet-db0 kvmnet-devel0 kvmnet-kermit0 kvmnet-mail0 kvmnet-max0 kvmnet-repo0 kvmnet-voip0 kvmnet-wper0 kvmnet-wsos0 kvmnet-* interfaces are tun devices. ------------------------- Whenever i add a couple of "virtual" bridges assigning an ip address to, for example, br0:1 br0:2, the panic happens a couple of times a day. If i leave only br0 and br1 it's very hard to trigger (but this may be related to network traffic which, in this case, is very low). By the way, i'm using this kernel (with and without the previous patch) on my workstation which has a br0 interface and some VM attached in the same way. I am not experiencing crashes and the only difference is that i don't have, on my desktop, any br0:1 br0:2 interfaces. Hope it helps. Max